The first (and currently best) book of its kind for North American birds, a moderate-sized but hefty volume, Mark Elbroch and Eleanor Marks, separate the subject into 7 categories: Tracks and Trails, Pellets, Droppings, Feeding Signs/other behaviors, Nests and Roosts, Feathers, Skulls. This title sets a high standard as the first book of its kind for North American birds. The text is liberally sprinkled with stories from the authors own lives, and intriguing comments on the cultural renaissance of tracking. Softback, 8.25" x 5.5", 456 pages, with extensive color photos and drawings of bird sign and tracks . Call toll free 1-866-596-9982 to order. FAST FREE SHIPPING.